On Mon, 2019-09-30 at 14:47 -0700, John Hubbard wrote:
> On 9/30/19 11:42 AM, Leonardo Bras wrote:
> > On Mon, 2019-09-30 at 10:57 -0700, John Hubbard wrote:
> > > > As I told before, there are cases where this function is called from
> > > > 'real mode' in powerpc, which doesn't disable irqs and m
On Mon, 2019-09-30 at 10:57 -0700, John Hubbard wrote:
> > As I told before, there are cases where this function is called from
> > 'real mode' in powerpc, which doesn't disable irqs and may have a
> > tricky behavior if we do. So, encapsulate the irq disable in this
> > function can be a bad choic
On Sun, 2019-09-29 at 15:40 -0700, John Hubbard wrote:
> Hi, Leonardo,
Hello John, thanks for the feedback.
> Can we please do it as shown below, instead (compile-tested only)?
>
> This addresses all of the comments that I was going to make about structure
> of this patch, which are:
>
> * The
It's necessary to monitor lockless pagetable walks, in order to avoid doing
THP splitting/collapsing during them.
Some methods rely on local_irq_{save,restore}, but that can be slow on
cases with a lot of cpus are used for the process.
In order to speedup some cases, I propose a refcount-based ap
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